The Supercar Registry

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The Supercar Registry (https://www.yenko.net/forum/index.php)

- Technical & Restoration (https://www.yenko.net/forum/forumdisplay.php?f=86)

- - M-22 ??? (https://www.yenko.net/forum/showthread.php?t=80903)

budnate

04-13-2005 07:39 AM

Re: M-22 ???

I am to tired to dig it up the stuff I have on the subject ..but I looked at a trans 2 yrs ago and it was 72/3/4..??? trans had fine spline input looks like a M22, I may have my facts bassackwards here but I think they made M20's in the early 70s that looked like M22's...anyway thats how I recall how it went..something screwy anyways. Jeff was working with me on it..Jeff you recall how that went???

Bud.

JoeG	04-13-2005 07:45 AM

Re: M-22 ???

1 Attachment(s)

Here'e a photo of the 4sp Muncie transmission assembly ID tags you might find ...These photos are courtesy of "The Chevelle Report"--Mark Meekins-----The best publication while it was out https://www.yenko.net/ubbthreads/imag...lins/beers.gif https://www.yenko.net/attachments/134282-Scan0014.jpg

Mr70	04-13-2005 07:50 AM

Re: M-22 ???

Amen

DarrenX33

04-13-2005 08:26 AM

Re: M-22 ???

For what it's worth (perhaps nothing) here is a shot of the head gear in my M22. Just so happens to be out of the car right now. https://www.yenko.net/ubbthreads/imag...lins/smirk.gif

http://img.photobucket.com/albums/v6...8-3889_IMG.jpg

Zman	04-13-2005 08:32 AM

Re: M-22 ???

Since you've already confirmed it's not an M-22, if you want to determine if it's an M-20, or M-21, simply count the teeth on the input shaft. 21 teeth = M-20, 26 teeth = M-21/22. The exception is the Early M-20 with 24 teeth.
(M-21, and M-22 have the same gear ratios).
ALL M-22 regardless of the year should have a drain plug.
ALL 70 up "661" cases have the drain plug regardless of ratio.
ALL "661" boxes from 70 - 74 have 26 spline input shaft, and 32 spline output shaft.
ALl info taken from www.gearzone.net